摘要
分析了粉煤灰的细度、需水量比、化学组成、矿物组成、微观形貌等理化特性,阐述了粉煤灰用于水泥、混凝土领域以及用于废水处理的作用机理。从机械粉磨、火法改性、酸改性、碱改性、表面活性剂改性及混合改性等方面介绍了粉煤灰改性方法,有助于改善粉煤灰品质。
Fineness, water demand ratio, chemical composition and mineral structure of coal fly ashes were measured in this paper. The mechanism of fly ash used in cement, concrete and waste water treatment is expounded. The modification methods of coal fly ash are introduced from mechanical grinding, fire modification, acid modification, alkali modification,surface active agent modification and mixed modification which can improve the quality of fly ash and broaden its utilization way.
关键词
粉煤灰
理化特性
改性
吸附性能
fly ash
physical and chemical properties
modification
adsorption performance
